Could we see Michael Keaton turning back up as Batman in Batgirl after first making his return to the role in The Flash? According to Warner Bros., it sure does look that way. An official press release hyping the upcoming movie, which is planned as an HBO Max exclusive, lists Keaton's name as a part of the cast. This is a new revelation with Keaton joining previously-announced cast members Leslie Grace, J. K. Simmons, Brendan Fraser, and Jacob Scipio.

The press release describes Batgirl as an action adventure movie and the "first-ever live-action feature film to star the popular DC Super Hero, Batgirl." Adil El Arbi and Bilall Fallah are directing the feature, which is currently filming, using a screenplay by The Flash writer Christina Hodson. Kristin Burr produces and the executive producers include Michael E. Uslan, Walter Hamada, Galen Vaisman, and Hodson.

Because this release comes straight from Warner Bros., the casting would appear to be official, unless Keaton's name was somehow added to the Batgirl release by mistake. It's also possible that the studio was hoping to make a big announcement at some point about this casting and that his name was inserted into the press release prematurely. In any case, this reported casting is in line with rumors that Keaton's Batman would be treated as the "Nick Fury of the DCEU" by appearing in multiple projects.

The filmmakers have confirmed that Batman does exist in the Batgirl universe, but nobody was revealing which Batman it might be. J. K. Simmons' casting as James Gordon would seemingly suggest that we're still in the DCEU, which originally had Ben Affleck as its Batman. Keaton will be joining the DCEU as his Batman variant in The Flash, so it would still make sense for him to also appear in Batgirl. In any case, perhaps this will all make better sense after The Flash, which will introduce the live-action multiverse in the DCEU.

"It was an incredible moment," Leslie Grace told Variety of the moment she learned of her casting. "When I mean incredible, I mean the textbook definition of, I could not believe it. My brain actually broke when I got the news. The directors actually called me, and the producers were on the line."

"They called me under the pretense, or had me hop on a Zoom link under the pretense that I was doing a final test -- that this was just another step in the process," she added. "So I hop on, and I only see our two directors, Adil [El Arbi] and Bilall [Fallah], who are so sweet. They were like, 'Yeah, we just want to do this final test,' but at the bottom I can see that there are eight participants, and it's recording, and I'm like, 'Alright, I don't know what this is.' And then they broke it to me like, 'We just want you to read this text; we're going to send it to your email.' And I open it and it says, 'I'm Batgirl, love Adil,' and my brain broke."

Perhaps Grace's Barbara Gordon will meet Michael Keaton's Bruce Wayne in Batgirl, but is it the same Batman she's always known, or a variant coming in from elsewhere? The movie is expected to hit HBO Max sometime in 2022, so we will find out soon enough.